Central City, IL has a population of 1,056 and is the 14,813th largest city in the United States. The population density is 1,812 per sq mi which is 715% higher than the Illinois average and 1900% higher than the national average. The median age in Central City is 35 which is approximately 7% lower than the Illinois average of 37. In Central City, 58% of the population over 15 years of age are married, 99% speak English and 1% speak Spanish. 87% of Central City residents were born in Illinois, 12% were born out of state, 0% were born outside of the United States and 1% were foreign born.